We encourage you to reach out to Insulin for Life at ifl-usa.org or (352) 327-8649. It’s easy: you simply pay for the shipping to their center. While they accept a variety of diabetes supplies, such as insulin vials and pens, A1C test kits, glucagon, syringes, and more, keep in mind that they do not accept insulin pump supplies.
You can also try contacting your local animal shelter or health department, or other local organizations (think shelters, relief agencies, or religious institutions) to see if they have a program that accepts donations of supplies. You might also try reaching out to the device or supply manufacturer.